/* GDK - The GIMP Drawing Kit

 * Copyright (C) 2000 Red Hat, Inc.

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the

 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,

 * Boston, MA 02111-1307, USA.

 */

/*

 * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS

 * file for a list of people on the GTK+ Team.  See the ChangeLog

 * files for a list of changes.  These files are distributed with

 * GTK+ at ftp://ftp.gtk.org/pub/gtk/. 

 */

#include "config.h"

#include "gdkscreen.h"

#include "gdkdisplay.h"

#include "gdkdisplaymanager.h"

#include "gdkinternals.h"

#include "gdkmarshalers.h"

#include "gdkintl.h"

#include "gdkalias.h"

struct _GdkDisplayManager

{

  GObject parent_instance;

};

enum {

  PROP_0,

  PROP_DEFAULT_DISPLAY

};

enum {

  DISPLAY_OPENED,

  LAST_SIGNAL

};

static void gdk_display_manager_class_init   (GdkDisplayManagerClass *klass);

static void gdk_display_manager_set_property (GObject                *object,

					      guint                   prop_id,

					      const GValue           *value,

					      GParamSpec             *pspec);

static void gdk_display_manager_get_property (GObject                *object,

					      guint                   prop_id,

					      GValue                 *value,

					      GParamSpec             *pspec);

static guint signals[LAST_SIGNAL] = { 0 };

static GdkDisplay *default_display = NULL;

G_DEFINE_TYPE (GdkDisplayManager, gdk_display_manager, G_TYPE_OBJECT)

static void

gdk_display_manager_class_init (GdkDisplayManagerClass *klass)

{

  GObjectClass *object_class = G_OBJECT_CLASS (klass);

  object_class->set_property = gdk_display_manager_set_property;

  object_class->get_property = gdk_display_manager_get_property;

  /**

   * GdkDisplayManager::display-opened:

   * @display_manager: the object on which the signal is emitted

   * @display: the opened display

   *

   * The ::display_opened signal is emitted when a display is opened.

   *

   * Since: 2.2

   */

  signals[DISPLAY_OPENED] =

    g_signal_new (g_intern_static_string ("display-opened"),

		  G_OBJECT_CLASS_TYPE (object_class),

		  G_SIGNAL_RUN_LAST,

		  G_STRUCT_OFFSET (GdkDisplayManagerClass, display_opened),

		  NULL, NULL,

		  _gdk_marshal_VOID__OBJECT,

		  G_TYPE_NONE,

		  1,

		  GDK_TYPE_DISPLAY);

  g_object_class_install_property (object_class,

				   PROP_DEFAULT_DISPLAY,

				   g_param_spec_object ("default-display",

 							P_("Default Display"),

 							P_("The default display for GDK"),

							GDK_TYPE_DISPLAY,

 							G_PARAM_READWRITE|G_PARAM_STATIC_NAME|

							G_PARAM_STATIC_NICK|G_PARAM_STATIC_BLURB));

}

static void

gdk_display_manager_init (GdkDisplayManager *manager)

{

}

static void

gdk_display_manager_set_property (GObject      *object,

				  guint         prop_id,

				  const GValue *value,

				  GParamSpec   *pspec)

{

  switch (prop_id)

    {

    case PROP_DEFAULT_DISPLAY:

      gdk_display_manager_set_default_display (GDK_DISPLAY_MANAGER (object),

					       g_value_get_object (value));

      break;

    default:

      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);

      break;

    }

}

static void

gdk_display_manager_get_property (GObject      *object,

				  guint         prop_id,

				  GValue       *value,

				  GParamSpec   *pspec)

{

  switch (prop_id)

    {

    case PROP_DEFAULT_DISPLAY:

      g_value_set_object (value, default_display);

      break;

    default:

      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);

      break;

    }

}

/**

 * gdk_display_manager_get:

 *

 * Gets the singleton #GdkDisplayManager object.

 *

 * Returns: (transfer none): The global #GdkDisplayManager singleton; gdk_parse_pargs(),

 * gdk_init(), or gdk_init_check() must have been called first.

 *

 * Since: 2.2

 **/

GdkDisplayManager*

gdk_display_manager_get (void)

{

  static GdkDisplayManager *display_manager = NULL;

  if (!display_manager)

    display_manager = g_object_new (GDK_TYPE_DISPLAY_MANAGER, NULL);

  return display_manager;

}

/**

 * gdk_display_manager_get_default_display:

 * @display_manager: a #GdkDisplayManager 

 *

 * Gets the default #GdkDisplay.

 *

 * Returns: (transfer none): a #GdkDisplay, or %NULL if there is no default

 *   display.

 *

 * Since: 2.2

 */

GdkDisplay *

gdk_display_manager_get_default_display (GdkDisplayManager *display_manager)

{

  return default_display;

}

/**

 * gdk_display_get_default:

 *

 * Gets the default #GdkDisplay. This is a convenience

 * function for

 * <literal>gdk_display_manager_get_default_display (gdk_display_manager_get ())</literal>.

 *

 * Returns: (transfer none): a #GdkDisplay, or %NULL if there is no default

 *   display.

 *

 * Since: 2.2

 */

GdkDisplay *

gdk_display_get_default (void)

{

  return default_display;

}

/**

 * gdk_screen_get_default:

 *

 * Gets the default screen for the default display. (See

 * gdk_display_get_default ()).

 *

 * Returns: (transfer none): a #GdkScreen, or %NULL if there is no default display.

 *

 * Since: 2.2

 */

GdkScreen *

gdk_screen_get_default (void)

{

  if (default_display)

    return gdk_display_get_default_screen (default_display);

  else

    return NULL;

}

/**

 * gdk_display_manager_set_default_display:

 * @display_manager: a #GdkDisplayManager

 * @display: a #GdkDisplay

 * 

 * Sets @display as the default display.

 *

 * Since: 2.2

 **/

void

gdk_display_manager_set_default_display (GdkDisplayManager *display_manager,

					 GdkDisplay        *display)

{

  default_display = display;

  _gdk_windowing_set_default_display (display);

  g_object_notify (G_OBJECT (display_manager), "default-display");

}

/**

 * gdk_display_manager_list_displays:

 * @display_manager: a #GdkDisplayManager 

 *

 * List all currently open displays.

 * 

 * Return value: (transfer container) (element-type GdkDisplay): a newly allocated

 * #GSList of #GdkDisplay objects. Free this list with g_slist_free() when you

 * are done with it.

 *

 * Since: 2.2

 **/

GSList *

gdk_display_manager_list_displays (GdkDisplayManager *display_manager)

{

  return g_slist_copy (_gdk_displays);

}

#define __GDK_DISPLAY_MANAGER_C__

#include "gdkaliasdef.c"